Time controlling apparatus for burners.



H. E. DOLE & 0. S. DE ZARA.

TIME CONTROLLING APPARATUS FOR BURNEBS. APPLICATION FILED MAILZB, 1912.

1,086,589, Patented Feb. 10, 1914 2 8HEETB-SHBET 1.

ATTORNEY.

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H. E. DOLE & 0. S. DE ZARA. TIME CONTROLLING APPARATUS FOR BURNERS.

APPLICATION FILED MAR. 28, 1912.

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UNITED STATES PATENT OFFICE.

HERBERT E. DOLE AND ORRINGTON S. DE ZARA, OF BOSTON, MASSACHUSETTS, ASSIGN- ORS OF ONE-THIRD TO JAMES W. NOURIBOURN, 0F SOMERVILLE, MASSACHUSETTS.

TIME CONTROLLING APPARATUS FOR BURNERS.

Specification of Letters Patent.

Patented Feb. 10,1914.

To all whom it may concern Be it known that we, HERBERT E. DOLE and ORRINGTON S. DE ZARA, citizens of the United States of America, and residents of Boston, in the count-y of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Time Controlling Apparatuses for Burners, of which the following is a full, clear, and exact description.

This invention has for its object to provide means for causing the operation of a work member, such as a valve in a gas pipe, at certain predetermined periodic intervals, from a suitable time mechanism, such as a clock movement; whereby at certain predetermined times, that can be changed to suit the user, the work member or valve is operated or opened, and at a later predetermined time, according to adjustment, the member will be again operated, or the valve returned to closed position.

Another object of the invention is to provide an improved arrangement of the adjustable stops or engaging members, that are shiftable according to indications corresponding to the time that it is desired to have the work member operated by the clock movement.

A further object is to provide a construction whereby the clock movement together with the operating means can be readily removed from the work member or valve device for repairs or adjustment, or to facilitate replacement by another clock movement with the connected parts.

Another object of the invention is to provide in such a construction having a clock movement including a mainspringga spring or motor device that serves to actuate the valve or other work member, and suitable connect-ions between the two springs whereby the act of winding up the mainspring of the clock movement, will result in the other said spring being wound up at the same time.

In the accompanying drawings showing one embodiment of our invention, Figure 1 is a front elevation of the device; Fig. 2 is a vertical section on the line 22, Fig. 3; Fig. 3 is a side elevation of the device, with the valve shown in vertical section; and Fig. 4 shows one of the adjustable stops for the dial. Figs. 5 and 6 are a perspective and a plan View to illustrate the guard detent to be hereinafter referred to.

The invention is shown as applied to an ordinary plug valve in the feed pipe for a gas burner, but it is to be understood that instead of swinging the plug of a valve, other and various forms of work members can be operated, as, for instance, an electric switch can be moved to open and closed position.

Any desired form of a time device or clock movement can be employed, and one is shown in the drawing mounted between a front plate 5 and a rear plate 6, that forms the bearing plate for most of the members of the clock movement; and the latter need not be described further than to state that the spindle 7 may constitute the hour arbor, but preferably is so connected that it will make one rotation in 24: hours, and a dial 8 is shown on this arbor having at one half of the circumference marks from 1 to 12 and a similar arrangement on the other half of the circumference. Adjustable stops are carried by this dial, and while only two are shown, obviously a greater number might be employed; the dial being shown with two slots 9 and 10 that are curved and concentric with the arbor of the dial. In each of the slots is arranged a stud shown in the form of a screw 12 having a head 13 for turning it, and a nut member 14: which is placed on the rear of the dial and engaged by the screw after passing through the slot in the dial.

In order to provide a strong bearing for the head portion of the screw against the dial, we arrange an elongated narrow plate 15 containing an aperture 16, through which the screw projects loosely; the plate being curved corresponding to the curved slot and made slightly wider than the slot; and to prevent the nut turning we provide the nut with a short sleeve 17 that is larger than the slot but which has two sides flattened whereby it can project into the slot and be prevented from turning by the flat sides engaging the opposite walls of the slot. Another screw 13 is arranged at the other slot 10 and constructed in the same manner. At one side in the said plates of the clock movement is mounted a spindle 20 having a trip arm 21 whose vtreniity has an inclined face 522 positioned he en aged by the inwardly projecting portion of the stud 12 as the dial is otated by the clock movement in the di- 'on of the arrow indicated in Fig. l, web of tie several studs are .1 a round to the positiiim of the arm, it

' and rock the shaft 90.

of the clock movement 1 lever on a suitabi I I 7 er carrying a pin 25 at th top connected with an arm 26 on the root:- shaft 20; by which means the lever is swung in one direction when the stop on the dial engages the trip arm, a coil spring 27 connected between the lever 23 and the frame of the movement ing to retract the lever and to rctui the arm 21 to normal position be engaged and swung by the next stud. Another supporting plate 2 is mounted beyond the rear plate 6 and between these two plates is suitably supported a shaft 28, that is connected with a suitable driving spring 29 that when wound up will serve to rotate the shaft 28 and operate the connected work member, such as the valve plug 30.

On the shaft 28 are mounted a number of arms, four arms 31, being shown, that are radial'and'QO degrees apart; and these arms form with the said lever 23 an cscapement, each of the arms having a pin 32 thereon in position to alternately engage the escape ment pins and 84-011 the said lever, whereby upon the spring 29 being put under ten sion thatwould rotate the arms 31, they will advance in-the direction of the arrow indicatedin Fig. 2 until pin32 is arrested by the Upon one of-the studs on the dial swinging the stop arm 21, the lever 23 will be swung, andpin33willmove from under the pin 32, but the other stud 34 which is shown as positioned slightly below the pin 33 will thereupon engage the pin 32 and prevent further movement of thearms 31' and'shaft 28; but upon the spring swinging the escapement lever 23'back after the stop pin has passed, the pin 32 will be freed from the pin 3 permittingthe arm 81 to be swung around by the said spring for the shaft 28. But by this time thelever 23 has moved back and the pin 33'will engage the pin 32 on the succeeding arm 31'; whereby it. will be under-.

stood that as each of thestuds on the dial operate the trlp arm, the shaft 28 can be advanced by its spring a distance according to the arrangement of the several arms 31 thereon.

A suitable connection is provided between ment with the plug '30 wherebythe plug will be given a quarter turn as each stop on the dialengages the trip arm 22, and hence one stop will serve to open the valve, and the succeeding stop to close the valve, the length of time that the valve remains open being determined by the lapse of time as indicated by the hours on the dial. Means are also provided whereby the clock movement together with the said spring for operating the work device and the escapement, can be easily detached from the valve plug 30 or other work member, which may have the slotted plate 35, and suitable piping and connections are provided forming an upper member &0 and a lower member -11, which latter carries a pair of supporting arms-J2 and 43, that engage the bottom of the rear plate 6, preferably by having notches in the arms into which the edge of the plate extends.

At the top of the clock movement it is engaged by a pair of curved resilient arms 44 and 45 secured to the upper member 40 and having notches and 4-7 in their lower faces lQS1')GClll\'Oly, into which projects the upper edge of the said rear plate (3. lVhen thus posiioned and secured the clock movement will have the pin 37 projecting into the slotted portion of the disk carried by the valve 30; and it willb'e manifest that by pressing the spring arms 44' and 45 upward to disengage the plate 36, it can be inclined outward and disengaged from the lower sup ,porting arms 41 and 1-2 andthereupon removed by outward movement, and another similar devicesubstituted therefor, without :the employment of any tools whatever.

As seen in Figs 5 andG, a detent is pro- }vided, supportedadjacent the trip lever 21, the same being composed of a bent flat metal jplate so formed as to have a spring reaction iforwardly of the place of support toward the trip lever provided with a lip 52 to engage over the edge of the trip lover. The free extremity 53 of'the spring detent member. is curved or inclined to partake of the nature ofa cam, and its location is in the path of revolution ofthe time studs, and more or less concealed and-in no way conspicuous behind the dial. This prevents the devicebeingtampered with by malicious'or inconsideratepersons who might wish, to have the controllingdevicc operate at some time other than the predeterminedztime for its operatiombut it is operable, as proper, when one of the time studs comes around to impingement against the part 53 ofthe detent and crowds it so that the lip 52 is out. ,ofiits motionpreventingrelation to the trip lever.

The notched resilientretaining arms 44 and l-Sheretoforo mentioned'are preferably, joined by the part 4; which renders them of'united or bow'formso that-both1may be operated simultaneouslyby finger pressure leaving the other hand free to remove or insert the controlling device in its place of support in relation to the work member.

On the winding arbor 1 of the main spring S, is secured a gear 2, meshing with a gear 3, that engages a gear 4, fast on the spring 29 that operates the work member, as set forth. Consequently, when the key is applied and the main spring is wound, the spring 29 for the work member is simultaneously wound; the same operation that winds the main spring of the clock in the usual manner thus serves to also put the other spring under tension.

We claim 1. The combination with a clock movement having an hour dial, a pair of studs adjustable on the dial, a spindle carried by the movement, a trip lever fast on the spindle and arranged to be engaged alternately by said studs to rock the spindle, a work engaging member rotatably mounted, means for rotating such member, a series of arms carried by the work member, and each having a pin, and an escapement lever having a pair of adjacent lugs arranged to cooperate with said pins on the arms respectively, the escapement lever being connected with said spindle and reciprocated upon the spindle being rocked from engagement with said stops.

2. In a device of the character described,

the combination with the trip lever and the dial provided with adjustable time studs and a clock movement for operating the dial, of a spring detent having a member for normally enga ing the trip lever and to be forced to disengagement by the coaction therewith of the time stud prior to its coaction with the trip lever.

3. The combination of a clock movement, having a time dial, studs on the dial, a rock shaft, an arm on the rock shaft arranged to engage the studs and be swung as the dial rotates, a lever, means for swinging the lever from said rock shaft, a pair of adjacent studs on the lever, a rotatably mounted work member, a spring for the work member, a set of radial arms on the work member, a pin on each of the radial arms positioned to engage the studs on the lever and arrest the rotation of the work member as advanced by its spring, and to permit the advance of the work member as the lever is oscillated to bring the studs thereon to alternately engage the pins on the arms.

Signed by us at Charlestown, Mass, in presence of two subscribing Witnesses.

HERBERT E. DOLE. ORRINGTON S. DE ZARA. Witnesses:

RICHARD F. MURPHY, ALBERT E. BROWER.

copiel of this patent may be obtained for five cents each, by addrelsing the Oomminloner 0! Patents. Washington, D. C. 

